From 684666e51585f3b136a3f505f8173d7580bc52cd Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Mon, 23 Jan 2017 18:50:23 +0100 Subject: jfs: atomically read inode size See i_size_read() comments in include/linux/fs.h Signed-off-by: Fabian Frederick Signed-off-by: Dave Kleikamp --- fs/jfs/resize.c | 4 ++-- fs/jfs/super.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/jfs/resize.c b/fs/jfs/resize.c index bd9b641ada2c..7ddcb445a3d9 100644 --- a/fs/jfs/resize.c +++ b/fs/jfs/resize.c @@ -98,7 +98,7 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize) goto out; } - VolumeSize = sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits; + VolumeSize = i_size_read(sb->s_bdev->bd_inode) >> sb->s_blocksize_bits; if (VolumeSize) { if (newLVSize > VolumeSize) { @@ -211,7 +211,7 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize) txQuiesce(sb); /* Reset size of direct inode */ - sbi->direct_inode->i_size = sb->s_bdev->bd_inode->i_size; + sbi->direct_inode->i_size = i_size_read(sb->s_bdev->bd_inode); if (sbi->mntflag & JFS_INLINELOG) { /* diff --git a/fs/jfs/super.c b/fs/jfs/super.c index 2be7c9ce6663..51881eb8ccff 100644 --- a/fs/jfs/super.c +++ b/fs/jfs/super.c @@ -283,7 +283,7 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize, } case Opt_resize_nosize: { - *newLVSize = sb->s_bdev->bd_inode->i_size >> + *newLVSize = i_size_read(sb->s_bdev->bd_inode) >> sb->s_blocksize_bits; if (*newLVSize == 0) pr_err("JFS: Cannot determine volume size\n"); @@ -549,7 +549,7 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent) goto out_unload; } inode->i_ino = 0; - inode->i_size = sb->s_bdev->bd_inode->i_size; + inode->i_size = i_size_read(sb->s_bdev->bd_inode); inode->i_mapping->a_ops = &jfs_metapage_aops; hlist_add_fake(&inode->i_hash); mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); -- cgit v1.2.3-58-ga151 From 68227c03cba84a24faf8a7277d2b1a03c8959c2c Mon Sep 17 00:00:00 2001 From: Mateusz Jurczyk Date: Wed, 7 Jun 2017 12:26:49 +0200 Subject: fuse: initialize the flock flag in fuse_file on allocation Before the patch, the flock flag could remain uninitialized for the lifespan of the fuse_file allocation. Unless set to true in fuse_file_flock(), it would remain in an indeterminate state until read in an if statement in fuse_release_common(). This could consequently lead to taking an unexpected branch in the code. The bug was discovered by a runtime instrumentation designed to detect use of uninitialized memory in the kernel. Signed-off-by: Mateusz Jurczyk Fixes: 37fb3a30b462 ("fuse: fix flock") Cc: # v3.1+ Signed-off-by: Miklos Szeredi --- fs/fuse/file.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 3ee4fdc3da9e..76eac2a554c4 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -46,7 +46,7 @@ struct fuse_file *fuse_file_alloc(struct fuse_conn *fc) { struct fuse_file *ff; - ff = kmalloc(sizeof(struct fuse_file), GFP_KERNEL); + ff = kzalloc(sizeof(struct fuse_file), GFP_KERNEL); if (unlikely(!ff)) return NULL; -- cgit v1.2.3-58-ga151 From 5e2feac330953fe75197aecb20c781400e2bf606 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Fri, 16 Jun 2017 01:41:20 +0000 Subject: arm64: renesas: salvator-common: sound clock-frequency needs descending order It will be used ADG clock initial settings, and will be sound codec's initial system clock which needs maximum clock frequency. Thus, descending order is required Fixes: d37d2b3c0ec2708a ("arm64: dts: salvator-x: add 12288000 for sound ADG") Fixes: 0b03c32db03d63de ("arm64: dts: r8a7795: salvator-x: Add support for R-Car H3 ES2.0") Signed-off-by: Kuninori Morimoto Signed-off-by: Simon Horman --- arch/arm64/boot/dts/renesas/salvator-common.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/renesas/salvator-common.dtsi b/arch/arm64/boot/dts/renesas/salvator-common.dtsi index aef35e0b685a..a451996f590a 100644 --- a/arch/arm64/boot/dts/renesas/salvator-common.dtsi +++ b/arch/arm64/boot/dts/renesas/salvator-common.dtsi @@ -508,7 +508,7 @@ /* audio_clkout0/1/2/3 */ #clock-cells = <1>; - clock-frequency = <11289600 12288000>; + clock-frequency = <12288000 11289600>; status = "okay"; -- cgit v1.2.3-58-ga151 From dbe127ecae5372d8dc3b1584534d8d442ccd0220 Mon Sep 17 00:00:00 2001 From: Markus Elfring Date: Thu, 4 May 2017 14:14:15 -0300 Subject: media: bdisp-debug: Replace a seq_puts() call by seq_putc() in seven functions Seven single characters (line breaks) should be put into a sequence. Thus use the corresponding function "seq_putc". This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/sti/bdisp/bdisp-debug.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/media/platform/sti/bdisp/bdisp-debug.c b/drivers/media/platform/sti/bdisp/bdisp-debug.c index 7af66860d624..2cc289e4dea1 100644 --- a/drivers/media/platform/sti/bdisp/bdisp-debug.c +++ b/drivers/media/platform/sti/bdisp/bdisp-debug.c @@ -104,7 +104,7 @@ static void bdisp_dbg_dump_ins(struct seq_file *s, u32 val) if (val & BLT_INS_IRQ) seq_puts(s, "IRQ - "); - seq_puts(s, "\n"); + seq_putc(s, '\n'); } static void bdisp_dbg_dump_tty(struct seq_file *s, u32 val) @@ -153,7 +153,7 @@ static void bdisp_dbg_dump_tty(struct seq_file *s, u32 val) if (val & BLT_TTY_BIG_END) seq_puts(s, "BigEndian - "); - seq_puts(s, "\n"); + seq_putc(s, '\n'); } static void bdisp_dbg_dump_xy(struct seq_file *s, u32 val, char *name) @@ -230,7 +230,7 @@ static void bdisp_dbg_dump_sty(struct seq_file *s, seq_puts(s, "BigEndian - "); done: - seq_puts(s, "\n"); + seq_putc(s, '\n'); } static void bdisp_dbg_dump_fctl(struct seq_file *s, u32 val) @@ -247,7 +247,7 @@ static void bdisp_dbg_dump_fctl(struct seq_file *s, u32 val) else if ((val & BLT_FCTL_HV_SCALE) == BLT_FCTL_HV_SAMPLE) seq_puts(s, "Sample Chroma"); - seq_puts(s, "\n"); + seq_putc(s, '\n'); } static void bdisp_dbg_dump_rsf(struct seq_file *s, u32 val, char *name) @@ -266,7 +266,7 @@ static void bdisp_dbg_dump_rsf(struct seq_file *s, u32 val, char *name) seq_printf(s, "V: %d(6.10) / scale~%dx0.1", inc, 1024 * 10 / inc); done: - seq_puts(s, "\n"); + seq_putc(s, '\n'); } static void bdisp_dbg_dump_rzi(struct seq_file *s, u32 val, char *name) @@ -281,7 +281,7 @@ static void bdisp_dbg_dump_rzi(struct seq_file *s, u32 val, char *name) seq_printf(s, "V: init=%d repeat=%d", val & 0x3FF, (val >> 12) & 7); done: - seq_puts(s, "\n"); + seq_putc(s, '\n'); } static void bdisp_dbg_dump_ivmx(struct seq_file *s, @@ -293,7 +293,7 @@ static void bdisp_dbg_dump_ivmx(struct seq_file *s, seq_printf(s, "IVMX3\t0x%08X\t", c3); if (!c0 && !c1 && !c2 && !c3) { - seq_puts(s, "\n"); + seq_putc(s, '\n'); return; } -- cgit v1.2.3-58-ga151 From be78b59e4806337b447a07a5042f4ef84b047c1a Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 8 Jun 2017 06:01:37 -0300 Subject: media: Revert "[media] et8ek8: Export OF device ID as module aliases" This one got applied twice, causing a build error with clang: drivers/media/i2c/et8ek8/et8ek8_driver.c:1499:1: error: redefinition of '__mod_of__et8ek8_of_table_device_table' Fixes: 9ae05fd1e791 ("[media] et8ek8: Export OF device ID as module aliases") Signed-off-by: Arnd Bergmann Acked-by: Sakari Ailus Acked-by: Pavel Machek Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/i2c/et8ek8/et8ek8_driver.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/media/i2c/et8ek8/et8ek8_driver.c b/drivers/media/i2c/et8ek8/et8ek8_driver.c index 6e313d5243a0..f39f5179dd95 100644 --- a/drivers/media/i2c/et8ek8/et8ek8_driver.c +++ b/drivers/media/i2c/et8ek8/et8ek8_driver.c @@ -1496,7 +1496,6 @@ MODULE_DEVICE_TABLE(i2c, et8ek8_id_table); static const struct dev_pm_ops et8ek8_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(et8ek8_suspend, et8ek8_resume) }; -MODULE_DEVICE_TABLE(of, et8ek8_of_table); static struct i2c_driver et8ek8_i2c_driver = { .driver = { -- cgit v1.2.3-58-ga151 From 9b80f12e319198cef65076654ccaa4b2783a2fa1 Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Thu, 8 Jun 2017 06:21:13 -0300 Subject: media: coda: ctx->codec is not NULL in coda_alloc_framebuffers This fixes a smatch warning: drivers/media/platform/coda/coda-bit.c:415 coda_alloc_framebuffers() error: we previously assumed 'ctx->codec' could be null (see line 396) coda_alloc_framebuffers() is called from coda_start_encoding() and __coda_start_decoding(). Both dereference ctx->codec before calling coda_alloc_framebuffers() in lines 935 and 1649, so ctx->codec can not be NULL. Signed-off-by: Philipp Zabel Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/coda/coda-bit.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/coda/coda-bit.c b/drivers/media/platform/coda/coda-bit.c index 25cbf9e5ac5a..8d0211fd4fd0 100644 --- a/drivers/media/platform/coda/coda-bit.c +++ b/drivers/media/platform/coda/coda-bit.c @@ -393,8 +393,8 @@ static int coda_alloc_framebuffers(struct coda_ctx *ctx, int ret; int i; - if (ctx->codec && (ctx->codec->src_fourcc == V4L2_PIX_FMT_H264 || - ctx->codec->dst_fourcc == V4L2_PIX_FMT_H264)) { + if (ctx->codec->src_fourcc == V4L2_PIX_FMT_H264 || + ctx->codec->dst_fourcc == V4L2_PIX_FMT_H264) { width = round_up(q_data->width, 16); height = round_up(q_data->height, 16); } else { -- cgit v1.2.3-58-ga151 From f1bd9bd69bf8ae96ada7e7f71415bb5f1db453cb Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 9 Jun 2017 14:54:57 -0300 Subject: media: stkwebcam: Use more common logging styles Convert STK_ to pr_ to use the typical kernel logging. Add a define for pr_fmt. No change in logging output. Miscellanea: o Remove now unused PREFIX and STK_ macros o Realign arguments o Use pr__ratelimited o Add a few missing newlines to formats Signed-off-by: Joe Perches Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/stkwebcam/stk-sensor.c | 32 ++++++++------- drivers/media/usb/stkwebcam/stk-webcam.c | 70 ++++++++++++++++---------------- drivers/media/usb/stkwebcam/stk-webcam.h | 6 --- 3 files changed, 52 insertions(+), 56 deletions(-) diff --git a/drivers/media/usb/stkwebcam/stk-sensor.c b/drivers/media/usb/stkwebcam/stk-sensor.c index 985af9933c7e..c1d4505f84ea 100644 --- a/drivers/media/usb/stkwebcam/stk-sensor.c +++ b/drivers/media/usb/stkwebcam/stk-sensor.c @@ -41,6 +41,8 @@ /* It seems the i2c bus is controlled with these registers */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include "stk-webcam.h" #define STK_IIC_BASE (0x0200) @@ -239,8 +241,8 @@ static int stk_sensor_outb(struct stk_camera *dev, u8 reg, u8 val) } while (tmpval == 0 && i < MAX_RETRIES); if (tmpval != STK_IIC_STAT_TX_OK) { if (tmpval) - STK_ERROR("stk_sensor_outb failed, status=0x%02x\n", - tmpval); + pr_err("stk_sensor_outb failed, status=0x%02x\n", + tmpval); return 1; } else return 0; @@ -262,8 +264,8 @@ static int stk_sensor_inb(struct stk_camera *dev, u8 reg, u8 *val) } while (tmpval == 0 && i < MAX_RETRIES); if (tmpval != STK_IIC_STAT_RX_OK) { if (tmpval) - STK_ERROR("stk_sensor_inb failed, status=0x%02x\n", - tmpval); + pr_err("stk_sensor_inb failed, status=0x%02x\n", + tmpval); return 1; } @@ -366,29 +368,29 @@ int stk_sensor_init(struct stk_camera *dev) if (stk_camera_write_reg(dev, STK_IIC_ENABLE, STK_IIC_ENABLE_YES) || stk_camera_write_reg(dev, STK_IIC_ADDR, SENSOR_ADDRESS) || stk_sensor_outb(dev, REG_COM7, COM7_RESET)) { - STK_ERROR("Sensor resetting failed\n"); + pr_err("Sensor resetting failed\n"); return -ENODEV; } msleep(10); /* Read the manufacturer ID: ov = 0x7FA2 */ if (stk_sensor_inb(dev, REG_MIDH, &idh) || stk_sensor_inb(dev, REG_MIDL, &idl)) { - STK_ERROR("Strange error reading sensor ID\n"); + pr_err("Strange error reading sensor ID\n"); return -ENODEV; } if (idh != 0x7f || idl != 0xa2) { - STK_ERROR("Huh? you don't have a sensor from ovt\n"); + pr_err("Huh? you don't have a sensor from ovt\n"); return -ENODEV; } if (stk_sensor_inb(dev, REG_PID, &idh) || stk_sensor_inb(dev, REG_VER, &idl)) { - STK_ERROR("Could not read sensor model\n"); + pr_err("Could not read sensor model\n"); return -ENODEV; } stk_sensor_write_regvals(dev, ov_initvals); msleep(10); - STK_INFO("OmniVision sensor detected, id %02X%02X at address %x\n", - idh, idl, SENSOR_ADDRESS); + pr_info("OmniVision sensor detected, id %02X%02X at address %x\n", + idh, idl, SENSOR_ADDRESS); return 0; } @@ -520,7 +522,8 @@ int stk_sensor_configure(struct stk_camera *dev) case MODE_SXGA: com7 = COM7_FMT_SXGA; dummylines = 0; break; - default: STK_ERROR("Unsupported mode %d\n", dev->vsettings.mode); + default: + pr_err("Unsupported mode %d\n", dev->vsettings.mode); return -EFAULT; } switch (dev->vsettings.palette) { @@ -544,7 +547,8 @@ int stk_sensor_configure(struct stk_camera *dev) com7 |= COM7_PBAYER; rv = ov_fmt_bayer; break; - default: STK_ERROR("Unsupported colorspace\n"); + default: + pr_err("Unsupported colorspace\n"); return -EFAULT; } /*FIXME sometimes the sensor go to a bad state @@ -564,7 +568,7 @@ int stk_sensor_configure(struct stk_camera *dev) switch (dev->vsettings.mode) { case MODE_VGA: if (stk_sensor_set_hw(dev, 302, 1582, 6, 486)) - STK_ERROR("stk_sensor_set_hw failed (VGA)\n"); + pr_err("stk_sensor_set_hw failed (VGA)\n"); break; case MODE_SXGA: case MODE_CIF: @@ -572,7 +576,7 @@ int stk_sensor_configure(struct stk_camera *dev) case MODE_QCIF: /*FIXME These settings seem ignored by the sensor if (stk_sensor_set_hw(dev, 220, 1500, 10, 1034)) - STK_ERROR("stk_sensor_set_hw failed (SXGA)\n"); + pr_err("stk_sensor_set_hw failed (SXGA)\n"); */ break; } diff --git a/drivers/media/usb/stkwebcam/stk-webcam.c b/drivers/media/usb/stkwebcam/stk-webcam.c index 6e7fc36b658f..90d4a08cda31 100644 --- a/drivers/media/usb/stkwebcam/stk-webcam.c +++ b/drivers/media/usb/stkwebcam/stk-webcam.c @@ -18,6 +18,8 @@ * GNU General Public License for more details. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include #include #include @@ -175,15 +177,15 @@ static int stk_start_stream(struct stk_camera *dev) if (!is_present(dev)) return -ENODEV; if (!is_memallocd(dev) || !is_initialised(dev)) { - STK_ERROR("FIXME: Buffers are not allocated\n"); + pr_err("FIXME: Buffers are not allocated\n"); return -EFAULT; } ret = usb_set_interface(dev->udev, 0, 5); if (ret < 0) - STK_ERROR("usb_set_interface failed !\n"); + pr_err("usb_set_interface failed !\n"); if (stk_sensor_wakeup(dev)) - STK_ERROR("error awaking the sensor\n"); + pr_err("error awaking the sensor\n"); stk_camera_read_reg(dev, 0x0116, &value_116); stk_camera_read_reg(dev, 0x0117, &value_117); @@ -224,9 +226,9 @@ static int stk_stop_stream(struct stk_camera *dev) unset_streaming(dev); if (usb_set_interface(dev->udev, 0, 0)) - STK_ERROR("usb_set_interface failed !\n"); + pr_err("usb_set_interface failed !\n"); if (stk_sensor_sleep(dev)) - STK_ERROR("error suspending the sensor\n"); + pr_err("error suspending the sensor\n"); } return 0; } @@ -313,7 +315,7 @@ static void stk_isoc_handler(struct urb *urb) dev = (struct stk_camera *) urb->context; if (dev == NULL) { - STK_ERROR("isoc_handler called with NULL device !\n"); + pr_err("isoc_handler called with NULL device !\n"); return; } @@ -326,14 +328,13 @@ static void stk_isoc_handler(struct urb *urb) spin_lock_irqsave(&dev->spinlock, flags); if (urb->status != -EINPROGRESS && urb->status != 0) { - STK_ERROR("isoc_handler: urb->status == %d\n", urb->status); + pr_err("isoc_handler: urb->status == %d\n", urb->status); goto resubmit; } if (list_empty(&dev->sio_avail)) { /*FIXME Stop streaming after a while */ - (void) (printk_ratelimit() && - STK_ERROR("isoc_handler without available buffer!\n")); + pr_err_ratelimited("isoc_handler without available buffer!\n"); goto resubmit; } fb = list_first_entry(&dev->sio_avail, @@ -343,8 +344,8 @@ static void stk_isoc_handler(struct urb *urb) for (i = 0; i < urb->number_of_packets; i++) { if (urb->iso_frame_desc[i].status != 0) { if (urb->iso_frame_desc[i].status != -EXDEV) - STK_ERROR("Frame %d has error %d\n", i, - urb->iso_frame_desc[i].status); + pr_err("Frame %d has error %d\n", + i, urb->iso_frame_desc[i].status); continue; } framelen = urb->iso_frame_desc[i].actual_length; @@ -368,9 +369,8 @@ static void stk_isoc_handler(struct urb *urb) /* This marks a new frame */ if (fb->v4lbuf.bytesused != 0 && fb->v4lbuf.bytesused != dev->frame_size) { - (void) (printk_ratelimit() && - STK_ERROR("frame %d, bytesused=%d, skipping\n", - i, fb->v4lbuf.bytesused)); + pr_err_ratelimited("frame %d, bytesused=%d, skipping\n", + i, fb->v4lbuf.bytesused); fb->v4lbuf.bytesused = 0; fill = fb->buffer; } else if (fb->v4lbuf.bytesused == dev->frame_size) { @@ -395,8 +395,7 @@ static void stk_isoc_handler(struct urb *urb) /* Our buffer is full !!! */ if (framelen + fb->v4lbuf.bytesused > dev->frame_size) { - (void) (printk_ratelimit() && - STK_ERROR("Frame buffer overflow, lost sync\n")); + pr_err_ratelimited("Frame buffer overflow, lost sync\n"); /*FIXME Do something here? */ continue; } @@ -414,8 +413,8 @@ resubmit: urb->dev = dev->udev; ret = usb_submit_urb(urb, GFP_ATOMIC); if (ret != 0) { - STK_ERROR("Error (%d) re-submitting urb in stk_isoc_handler.\n", - ret); + pr_err("Error (%d) re-submitting urb in stk_isoc_handler\n", + ret); } } @@ -433,32 +432,31 @@ static int stk_prepare_iso(struct stk_camera *dev) udev = dev->udev; if (dev->isobufs) - STK_ERROR("isobufs already allocated. Bad\n"); + pr_err("isobufs already allocated. Bad\n"); else dev->isobufs = kcalloc(MAX_ISO_BUFS, sizeof(*dev->isobufs), GFP_KERNEL); if (dev->isobufs == NULL) { - STK_ERROR("Unable to allocate iso buffers\n"); + pr_err("Unable to allocate iso buffers\n"); return -ENOMEM; } for (i = 0; i < MAX_ISO_BUFS; i++) { if (dev->isobufs[i].data == NULL) { kbuf = kzalloc(ISO_BUFFER_SIZE, GFP_KERNEL); if (kbuf == NULL) { - STK_ERROR("Failed to allocate iso buffer %d\n", - i); + pr_err("Failed to allocate iso buffer %d\n", i); goto isobufs_out; } dev->isobufs[i].data = kbuf; } else - STK_ERROR("isobuf data already allocated\n"); + pr_err("isobuf data already allocated\n"); if (dev->isobufs[i].urb == NULL) { urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL); if (urb == NULL) goto isobufs_out; dev->isobufs[i].urb = urb; } else { - STK_ERROR("Killing URB\n"); + pr_err("Killing URB\n"); usb_kill_urb(dev->isobufs[i].urb); urb = dev->isobufs[i].urb; } @@ -567,7 +565,7 @@ static int stk_prepare_sio_buffers(struct stk_camera *dev, unsigned n_sbufs) { int i; if (dev->sio_bufs != NULL) - STK_ERROR("sio_bufs already allocated\n"); + pr_err("sio_bufs already allocated\n"); else { dev->sio_bufs = kzalloc(n_sbufs * sizeof(struct stk_sio_buffer), GFP_KERNEL); @@ -690,7 +688,7 @@ static ssize_t stk_read(struct file *fp, char __user *buf, spin_lock_irqsave(&dev->spinlock, flags); if (list_empty(&dev->sio_full)) { spin_unlock_irqrestore(&dev->spinlock, flags); - STK_ERROR("BUG: No siobufs ready\n"); + pr_err("BUG: No siobufs ready\n"); return 0; } sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list); @@ -907,7 +905,7 @@ static int stk_vidioc_g_fmt_vid_cap(struct file *filp, stk_sizes[i].m != dev->vsettings.mode; i++) ; if (i == ARRAY_SIZE(stk_sizes)) { - STK_ERROR("ERROR: mode invalid\n"); + pr_err("ERROR: mode invalid\n"); return -EINVAL; } pix_format->width = stk_sizes[i].w; @@ -985,7 +983,7 @@ static int stk_setup_format(struct stk_camera *dev) stk_sizes[i].m != dev->vsettings.mode) i++; if (i == ARRAY_SIZE(stk_sizes)) { - STK_ERROR("Something is broken in %s\n", __func__); + pr_err("Something is broken in %s\n", __func__); return -EFAULT; } /* This registers controls some timings, not sure of what. */ @@ -1241,7 +1239,7 @@ static void stk_v4l_dev_release(struct video_device *vd) struct stk_camera *dev = vdev_to_camera(vd); if (dev->sio_bufs != NULL || dev->isobufs != NULL) - STK_ERROR("We are leaking memory\n"); + pr_err("We are leaking memory\n"); usb_put_intf(dev->interface); kfree(dev); } @@ -1264,10 +1262,10 @@ static int stk_register_video_device(struct stk_camera *dev) video_set_drvdata(&dev->vdev, dev); err = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1); if (err) - STK_ERROR("v4l registration failed\n"); + pr_err("v4l registration failed\n"); else - STK_INFO("Syntek USB2.0 Camera is now controlling device %s\n", - video_device_node_name(&dev->vdev)); + pr_info("Syntek USB2.0 Camera is now controlling device %s\n", + video_device_node_name(&dev->vdev)); return err; } @@ -1288,7 +1286,7 @@ static int stk_camera_probe(struct usb_interface *interface, dev = kzalloc(sizeof(struct stk_camera), GFP_KERNEL); if (dev == NULL) { - STK_ERROR("Out of memory !\n"); + pr_err("Out of memory !\n"); return -ENOMEM; } err = v4l2_device_register(&interface->dev, &dev->v4l2_dev); @@ -1352,7 +1350,7 @@ static int stk_camera_probe(struct usb_interface *interface, } } if (!dev->isoc_ep) { - STK_ERROR("Could not find isoc-in endpoint"); + pr_err("Could not find isoc-in endpoint\n"); err = -ENODEV; goto error; } @@ -1387,8 +1385,8 @@ static void stk_camera_disconnect(struct usb_interface *interface) wake_up_interruptible(&dev->wait_frame); - STK_INFO("Syntek USB2.0 Camera release resources device %s\n", - video_device_node_name(&dev->vdev)); + pr_info("Syntek USB2.0 Camera release resources device %s\n", + video_device_node_name(&dev->vdev)); video_unregister_device(&dev->vdev); v4l2_ctrl_handler_free(&dev->hdl); diff --git a/drivers/media/usb/stkwebcam/stk-webcam.h b/drivers/media/usb/stkwebcam/stk-webcam.h index 0284120ce246..5cecbdc97573 100644 --- a/drivers/media/usb/stkwebcam/stk-webcam.h +++ b/drivers/media/usb/stkwebcam/stk-webcam.h @@ -31,12 +31,6 @@ #define ISO_MAX_FRAME_SIZE 3 * 1024 #define ISO_BUFFER_SIZE (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE) - -#define PREFIX "stkwebcam: " -#define STK_INFO(str, args...) printk(KERN_INFO PREFIX str, ##args) -#define STK_ERROR(str, args...) printk(KERN_ERR PREFIX str, ##args) -#define STK_WARNING(str, args...) printk(KERN_WARNING PREFIX str, ##args) - struct stk_iso_buf { void *data; int length; -- cgit v1.2.3-58-ga151 From 7ee88f8c6b0ce92c652cad7331e09c0ce8a9239b Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 9 Jun 2017 16:09:08 -0300 Subject: media: tuner-core: Remove unused #define PREFIX Commit 680d87c0a9e3 ("[media] tuner-core: use pr_foo, instead of internal printk macros") removed the use of PREFIX, remove the #define Signed-off-by: Joe Perches Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/v4l2-core/tuner-core.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/media/v4l2-core/tuner-core.c b/drivers/media/v4l2-core/tuner-core.c index e48b7c032c95..8db45dfc271b 100644 --- a/drivers/media/v4l2-core/tuner-core.c +++ b/drivers/media/v4l2-core/tuner-core.c @@ -43,8 +43,6 @@ #define UNSET (-1U) -#define PREFIX (t->i2c->dev.driver->name) - /* * Driver modprobe parameters */ -- cgit v1.2.3-58-ga151 From 0a0c1b823cbc0b72eb6e0c2cfe5704cf80fe842d Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 21 Jun 2017 19:10:32 -0300 Subject: media: rainshadow-cec: avoid -Wmaybe-uninitialized warning again Back in April I created a patch to address a false-positive warning: drivers/media/usb/rainshadow-cec/rainshadow-cec.c: In function 'rain_irq_work_handler': drivers/media/usb/rainshadow-cec/rainshadow-cec.c:171:31: error: 'data' may be used uninitialized in this function [-Werror=maybe-uninitialized] My patch was totally wrong and introduced a real bug, and Colin Ian King thankfully noticed it now and fixed my mistake. Unfortunately, fixing the actual uninitialized data in this case brought back the original bogus warning. This is a new version of the patch, which simplifies the code to the point where gcc notices the behavior is correct. Fixes: ca33784ba494 ("[media] rainshadow-cec: ensure exit_loop is intialized") Fixes: ea6a69defd3311 ("[media] rainshadow-cec: avoid -Wmaybe-uninitialized warning") Cc: Colin Ian King Signed-off-by: Arnd Bergmann Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/rainshadow-cec/rainshadow-cec.c | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) diff --git a/drivers/media/usb/rainshadow-cec/rainshadow-cec.c b/drivers/media/usb/rainshadow-cec/rainshadow-cec.c index f203699e9c1b..65692576690f 100644 --- a/drivers/media/usb/rainshadow-cec/rainshadow-cec.c +++ b/drivers/media/usb/rainshadow-cec/rainshadow-cec.c @@ -116,21 +116,19 @@ static void rain_irq_work_handler(struct work_struct *work) while (true) { unsigned long flags; - bool exit_loop = false; char data; spin_lock_irqsave(&rain->buf_lock, flags); - if (rain->buf_len) { - data = rain->buf[rain->buf_rd_idx]; - rain->buf_len--; - rain->buf_rd_idx = (rain->buf_rd_idx + 1) & 0xff; - } else { - exit_loop = true; + if (!rain->buf_len) { + spin_unlock_irqrestore(&rain->buf_lock, flags); + break; } - spin_unlock_irqrestore(&rain->buf_lock, flags); - if (exit_loop) - break; + data = rain->buf[rain->buf_rd_idx]; + rain->buf_len--; + rain->buf_rd_idx = (rain->buf_rd_idx + 1) & 0xff; + + spin_unlock_irqrestore(&rain->buf_lock, flags); if (!rain->cmd_started && data != '?') continue; -- cgit v1.2.3-58-ga151 From 13c2bede49f996ca34a368dfe05be53d6b2ccc22 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Thu, 22 Jun 2017 01:01:22 -0300 Subject: media: radio: wl1273: add check on core->write() return value Check return value from call to core->write(), so in case of error print error message, jump to goto label fail and eventually return. Addresses-Coverity-ID: 1226943 Signed-off-by: Gustavo A. R. Silva Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/radio/radio-wl1273.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/media/radio/radio-wl1273.c b/drivers/media/radio/radio-wl1273.c index 7240223dc15a..17e82a9a0109 100644 --- a/drivers/media/radio/radio-wl1273.c +++ b/drivers/media/radio/radio-wl1273.c @@ -610,10 +610,21 @@ static int wl1273_fm_start(struct wl1273_device *radio, int new_mode) } } - if (radio->rds_on) + if (radio->rds_on) { r = core->write(core, WL1273_RDS_DATA_ENB, 1); - else + if (r) { + dev_err(dev, "%s: RDS_DATA_ENB ON fails\n", + __func__); + goto fail; + } + } else { r = core->write(core, WL1273_RDS_DATA_ENB, 0); + if (r) { + dev_err(dev, "%s: RDS_DATA_ENB OFF fails\n", + __func__); + goto fail; + } + } } else { dev_warn(dev, "%s: Illegal mode.\n", __func__); } -- cgit v1.2.3-58-ga151 From bc8e2d627a5888c48d553abe534c341c1c096a5e Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Thu, 22 Jun 2017 14:27:21 -0300 Subject: media: venus: fix loop wrap in cleanup of clks The current pre-decrement is incorrect and should be replaced with a post-decrement. Consider the case where the very first clk_prepare_enable fails when i is 0; in this case the error clean up will decrement the unsigned int which wraps to the largest unsigned int value causing an array out of bounds read on core->clks[i]. Detected by CoverityScan, CID#1446590 ("Out-of-bounds read") Signed-off-by: Colin Ian King Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/qcom/venus/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c index 776d2bae6979..d8cbe8549d97 100644 --- a/drivers/media/platform/qcom/venus/core.c +++ b/drivers/media/platform/qcom/venus/core.c @@ -137,7 +137,7 @@ static int venus_clks_enable(struct venus_core *core) return 0; err: - while (--i) + while (i--) clk_disable_unprepare(core->clks[i]); return ret; -- cgit v1.2.3-58-ga151 From cb778f5c8581c9c17cc4e420890e5589d948d584 Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Fri, 23 Jun 2017 06:54:09 -0300 Subject: media: coda: rename the picture run timeout error handler I would have liked the the picture run timeout error handler to be renamed to something a bit more descriptive in the original commit fb2be08f8cb3 ("[media] coda: first step at error recovery"). Somehow v1 [1] was merged instead of v2 [2]. [1] https://patchwork.kernel.org/patch/9663965/ [2] https://patchwork.kernel.org/patch/9774239/ Signed-off-by: Philipp Zabel Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/coda/coda-bit.c | 4 ++-- drivers/media/platform/coda/coda-common.c | 4 ++-- drivers/media/platform/coda/coda.h | 2 +- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/media/platform/coda/coda-bit.c b/drivers/media/platform/coda/coda-bit.c index 8d0211fd4fd0..bba1eb43b5d8 100644 --- a/drivers/media/platform/coda/coda-bit.c +++ b/drivers/media/platform/coda/coda-bit.c @@ -2198,7 +2198,7 @@ static void coda_finish_decode(struct coda_ctx *ctx) ctx->display_idx = display_idx; } -static void coda_error_decode(struct coda_ctx *ctx) +static void coda_decode_timeout(struct coda_ctx *ctx) { struct vb2_v4l2_buffer *dst_buf; @@ -2223,7 +2223,7 @@ const struct coda_context_ops coda_bit_decode_ops = { .start_streaming = coda_start_decoding, .prepare_run = coda_prepare_decode, .finish_run = coda_finish_decode, - .error_run = coda_error_decode, + .run_timeout = coda_decode_timeout, .seq_end_work = coda_seq_end_work, .release = coda_bit_release, }; diff --git a/drivers/media/platform/coda/coda-common.c b/drivers/media/platform/coda/coda-common.c index f92cc7df58fb..829c7895a98a 100644 --- a/drivers/media/platform/coda/coda-common.c +++ b/drivers/media/platform/coda/coda-common.c @@ -1164,8 +1164,8 @@ static void coda_pic_run_work(struct work_struct *work) coda_hw_reset(ctx); - if (ctx->ops->error_run) - ctx->ops->error_run(ctx); + if (ctx->ops->run_timeout) + ctx->ops->run_timeout(ctx); } else if (!ctx->aborting) { ctx->ops->finish_run(ctx); } diff --git a/drivers/media/platform/coda/coda.h b/drivers/media/platform/coda/coda.h index 40fe22f0d757..c5f504d8cf67 100644 --- a/drivers/media/platform/coda/coda.h +++ b/drivers/media/platform/coda/coda.h @@ -183,7 +183,7 @@ struct coda_context_ops { int (*start_streaming)(struct coda_ctx *ctx); int (*prepare_run)(struct coda_ctx *ctx); void (*finish_run)(struct coda_ctx *ctx); - void (*error_run)(struct coda_ctx *ctx); + void (*run_timeout)(struct coda_ctx *ctx); void (*seq_end_work)(struct work_struct *work); void (*release)(struct coda_ctx *ctx); }; -- cgit v1.2.3-58-ga151 From d52786ddd2d52f90db5ba30a185d641771e27167 Mon Sep 17 00:00:00 2001 From: Daniel Scheller Date: Fri, 23 Jun 2017 13:37:40 -0300 Subject: media: ddbridge: make (ddb)readl in while-loops fail-safe Reported by smatch: drivers/media/pci/ddbridge/ddbridge-core.c:1246 input_tasklet() warn: this loop depends on readl() succeeding drivers/media/pci/ddbridge/ddbridge-core.c:1768 flashio() warn: this loop depends on readl() succeeding drivers/media/pci/ddbridge/ddbridge-core.c:1788 flashio() warn: this loop depends on readl() succeeding Fix this by introducing safe_ddbreadl() which will wrap ddbreadl and checks for all bits set in the return which indicates failure, and return 0 in that case. Usable as drop-in-replacement in all affected while loops w/o having to change the logic. Signed-off-by: Daniel Scheller Signed-off-by: Mauro Carvalho Chehab --- drivers/media/pci/ddbridge/ddbridge-core.c | 23 ++++++++++++++++++----- 1 file changed, 18 insertions(+), 5 deletions(-) diff --git a/drivers/media/pci/ddbridge/ddbridge-core.c b/drivers/media/pci/ddbridge/ddbridge-core.c index 9420479bee9a..cf7a6b0532dc 100644 --- a/drivers/media/pci/ddbridge/ddbridge-core.c +++ b/drivers/media/pci/ddbridge/ddbridge-core.c @@ -114,6 +114,19 @@ static int i2c_write_reg(struct i2c_adapter *adap, u8 adr, return i2c_write(adap, adr, msg, 2); } +static inline u32 safe_ddbreadl(struct ddb *dev, u32 adr) +{ + u32 val = ddbreadl(adr); + + /* (ddb)readl returns (uint)-1 (all bits set) on failure, catch that */ + if (val == ~0) { + printk(KERN_ERR "ddbreadl failure, adr=%08x\n", adr); + return 0; + } + + return val; +} + static int ddb_i2c_cmd(struct ddb_i2c *i2c, u32 adr, u32 cmd) { struct ddb *dev = i2c->dev; @@ -1243,7 +1256,7 @@ static void input_tasklet(unsigned long data) if (4&ddbreadl(DMA_BUFFER_CONTROL(input->nr))) printk(KERN_ERR "Overflow input %d\n", input->nr); while (input->cbuf != ((input->stat >> 11) & 0x1f) - || (4&ddbreadl(DMA_BUFFER_CONTROL(input->nr)))) { + || (4 & safe_ddbreadl(dev, DMA_BUFFER_CONTROL(input->nr)))) { dvb_dmx_swfilter_packets(&input->demux, input->vbuf[input->cbuf], input->dma_buf_size / 188); @@ -1765,7 +1778,7 @@ static int flashio(struct ddb *dev, u8 *wbuf, u32 wlen, u8 *rbuf, u32 rlen) wbuf += 4; wlen -= 4; ddbwritel(data, SPI_DATA); - while (ddbreadl(SPI_CONTROL) & 0x0004) + while (safe_ddbreadl(dev, SPI_CONTROL) & 0x0004) ; } @@ -1785,7 +1798,7 @@ static int flashio(struct ddb *dev, u8 *wbuf, u32 wlen, u8 *rbuf, u32 rlen) if (shift) data <<= shift; ddbwritel(data, SPI_DATA); - while (ddbreadl(SPI_CONTROL) & 0x0004) + while (safe_ddbreadl(dev, SPI_CONTROL) & 0x0004) ; if (!rlen) { @@ -1797,7 +1810,7 @@ static int flashio(struct ddb *dev, u8 *wbuf, u32 wlen, u8 *rbuf, u32 rlen) while (rlen > 4) { ddbwritel(0xffffffff, SPI_DATA); - while (ddbreadl(SPI_CONTROL) & 0x0004) + while (safe_ddbreadl(dev, SPI_CONTROL) & 0x0004) ; data = ddbreadl(SPI_DATA); *(u32 *) rbuf = swab32(data); @@ -1806,7 +1819,7 @@ static int flashio(struct ddb *dev, u8 *wbuf, u32 wlen, u8 *rbuf, u32 rlen) } ddbwritel(0x0003 | ((rlen << (8 + 3)) & 0x1F00), SPI_CONTROL); ddbwritel(0xffffffff, SPI_DATA); - while (ddbreadl(SPI_CONTROL) & 0x0004) + while (safe_ddbreadl(dev, SPI_CONTROL) & 0x0004) ; data = ddbreadl(SPI_DATA); -- cgit v1.2.3-58-ga151 From 11e358bf37e883528cffdc1c075b001aeeca30ad Mon Sep 17 00:00:00 2001 From: Daniel Scheller Date: Wed, 21 Jun 2017 13:53:47 -0300 Subject: media: ddbridge: use dev_* macros in favor of printk Side effect: KERN_DEBUG messages aren't written to the kernel log anymore. This also improves the tda18212_ping reporting a bit so users know that if pinging wasn't successful, bad things will happen. Since in module_init_ddbridge() there's no dev yet, pr_info is used instead. Signed-off-by: Daniel Scheller Signed-off-by: Mauro Carvalho Chehab --- drivers/media/pci/ddbridge/ddbridge-core.c | 78 ++++++++++++++++++------------ 1 file changed, 46 insertions(+), 32 deletions(-) diff --git a/drivers/media/pci/ddbridge/ddbridge-core.c b/drivers/media/pci/ddbridge/ddbridge-core.c index cf7a6b0532dc..c5745ae2ba5e 100644 --- a/drivers/media/pci/ddbridge/ddbridge-core.c +++ b/drivers/media/pci/ddbridge/ddbridge-core.c @@ -17,6 +17,8 @@ * http://www.gnu.org/copyleft/gpl.html */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include #include #include @@ -137,10 +139,10 @@ static int ddb_i2c_cmd(struct ddb_i2c *i2c, u32 adr, u32 cmd) ddbwritel((adr << 9) | cmd, i2c->regs + I2C_COMMAND); stat = wait_event_timeout(i2c->wq, i2c->done == 1, HZ); if (stat == 0) { - printk(KERN_ERR "I2C timeout\n"); + dev_err(&dev->pdev->dev, "I2C timeout\n"); { /* MSI debugging*/ u32 istat = ddbreadl(INTERRUPT_STATUS); - printk(KERN_ERR "IRS %08x\n", istat); + dev_err(&dev->pdev->dev, "IRS %08x\n", istat); ddbwritel(istat, INTERRUPT_ACK); } return -EIO; @@ -546,7 +548,7 @@ static u32 ddb_input_avail(struct ddb_input *input) off = (stat & 0x7ff) << 7; if (ctrl & 4) { - printk(KERN_ERR "IA %d %d %08x\n", idx, off, ctrl); + dev_err(&dev->pdev->dev, "IA %d %d %08x\n", idx, off, ctrl); ddbwritel(input->stat, DMA_BUFFER_ACK(input->nr)); return 0; } @@ -624,6 +626,7 @@ static int demod_attach_drxk(struct ddb_input *input) struct i2c_adapter *i2c = &input->port->i2c->adap; struct dvb_frontend *fe; struct drxk_config config; + struct device *dev = &input->port->dev->pdev->dev; memset(&config, 0, sizeof(config)); config.microcode_name = "drxk_a3.mc"; @@ -632,7 +635,7 @@ static int demod_attach_drxk(struct ddb_input *input) fe = input->fe = dvb_attach(drxk_attach, &config, i2c); if (!input->fe) { - printk(KERN_ERR "No DRXK found!\n"); + dev_err(dev, "No DRXK found!\n"); return -ENODEV; } fe->sec_priv = input; @@ -645,12 +648,13 @@ static int tuner_attach_tda18271(struct ddb_input *input) { struct i2c_adapter *i2c = &input->port->i2c->adap; struct dvb_frontend *fe; + struct device *dev = &input->port->dev->pdev->dev; if (input->fe->ops.i2c_gate_ctrl) input->fe->ops.i2c_gate_ctrl(input->fe, 1); fe = dvb_attach(tda18271c2dd_attach, input->fe, i2c, 0x60); if (!fe) { - printk(KERN_ERR "No TDA18271 found!\n"); + dev_err(dev, "No TDA18271 found!\n"); return -ENODEV; } if (input->fe->ops.i2c_gate_ctrl) @@ -683,13 +687,14 @@ static struct stv0367_config ddb_stv0367_config[] = { static int demod_attach_stv0367(struct ddb_input *input) { struct i2c_adapter *i2c = &input->port->i2c->adap; + struct device *dev = &input->port->dev->pdev->dev; /* attach frontend */ input->fe = dvb_attach(stv0367ddb_attach, &ddb_stv0367_config[(input->nr & 1)], i2c); if (!input->fe) { - printk(KERN_ERR "stv0367ddb_attach failed (not found?)\n"); + dev_err(dev, "stv0367ddb_attach failed (not found?)\n"); return -ENODEV; } @@ -703,17 +708,19 @@ static int demod_attach_stv0367(struct ddb_input *input) static int tuner_tda18212_ping(struct ddb_input *input, unsigned short adr) { struct i2c_adapter *adapter = &input->port->i2c->adap; + struct device *dev = &input->port->dev->pdev->dev; + u8 tda_id[2]; u8 subaddr = 0x00; - printk(KERN_DEBUG "stv0367-tda18212 tuner ping\n"); + dev_dbg(dev, "stv0367-tda18212 tuner ping\n"); if (input->fe->ops.i2c_gate_ctrl) input->fe->ops.i2c_gate_ctrl(input->fe, 1); if (i2c_read_regs(adapter, adr, subaddr, tda_id, sizeof(tda_id)) < 0) - printk(KERN_DEBUG "tda18212 ping 1 fail\n"); + dev_dbg(dev, "tda18212 ping 1 fail\n"); if (i2c_read_regs(adapter, adr, subaddr, tda_id, sizeof(tda_id)) < 0) - printk(KERN_DEBUG "tda18212 ping 2 fail\n"); + dev_warn(dev, "tda18212 ping failed, expect problems\n"); if (input->fe->ops.i2c_gate_ctrl) input->fe->ops.i2c_gate_ctrl(input->fe, 0); @@ -724,6 +731,7 @@ static int tuner_tda18212_ping(struct ddb_input *input, unsigned short adr) static int demod_attach_cxd28xx(struct ddb_input *input, int par, int osc24) { struct i2c_adapter *i2c = &input->port->i2c->adap; + struct device *dev = &input->port->dev->pdev->dev; struct cxd2841er_config cfg; /* the cxd2841er driver expects 8bit/shifted I2C addresses */ @@ -741,7 +749,7 @@ static int demod_attach_cxd28xx(struct ddb_input *input, int par, int osc24) input->fe = dvb_attach(cxd2841er_attach_t_c, &cfg, i2c); if (!input->fe) { - printk(KERN_ERR "No Sony CXD28xx found!\n"); + dev_err(dev, "No Sony CXD28xx found!\n"); return -ENODEV; } @@ -755,6 +763,7 @@ static int demod_attach_cxd28xx(struct ddb_input *input, int par, int osc24) static int tuner_attach_tda18212(struct ddb_input *input, u32 porttype) { struct i2c_adapter *adapter = &input->port->i2c->adap; + struct device *dev = &input->port->dev->pdev->dev; struct i2c_client *client; struct tda18212_config config = { .fe = input->fe, @@ -799,7 +808,7 @@ static int tuner_attach_tda18212(struct ddb_input *input, u32 porttype) return 0; err: - printk(KERN_INFO "TDA18212 tuner not found. Device is not fully operational.\n"); + dev_warn(dev, "TDA18212 tuner not found. Device is not fully operational.\n"); return -ENODEV; } @@ -860,19 +869,20 @@ static struct stv6110x_config stv6110b = { static int demod_attach_stv0900(struct ddb_input *input, int type) { struct i2c_adapter *i2c = &input->port->i2c->adap; + struct device *dev = &input->port->dev->pdev->dev; struct stv090x_config *feconf = type ? &stv0900_aa : &stv0900; input->fe = dvb_attach(stv090x_attach, feconf, i2c, (input->nr & 1) ? STV090x_DEMODULATOR_1 : STV090x_DEMODULATOR_0); if (!input->fe) { - printk(KERN_ERR "No STV0900 found!\n"); + dev_err(dev, "No STV0900 found!\n"); return -ENODEV; } if (!dvb_attach(lnbh24_attach, input->fe, i2c, 0, 0, (input->nr & 1) ? (0x09 - type) : (0x0b - type))) { - printk(KERN_ERR "No LNBH24 found!\n"); + dev_err(dev, "No LNBH24 found!\n"); return -ENODEV; } return 0; @@ -881,6 +891,7 @@ static int demod_attach_stv0900(struct ddb_input *input, int type) static int tuner_attach_stv6110(struct ddb_input *input, int type) { struct i2c_adapter *i2c = &input->port->i2c->adap; + struct device *dev = &input->port->dev->pdev->dev; struct stv090x_config *feconf = type ? &stv0900_aa : &stv0900; struct stv6110x_config *tunerconf = (input->nr & 1) ? &stv6110b : &stv6110a; @@ -888,10 +899,10 @@ static int tuner_attach_stv6110(struct ddb_input *input, int type) ctl = dvb_attach(stv6110x_attach, input->fe, tunerconf, i2c); if (!ctl) { - printk(KERN_ERR "No STV6110X found!\n"); + dev_err(dev, "No STV6110X found!\n"); return -ENODEV; } - printk(KERN_INFO "attach tuner input %d adr %02x\n", + dev_info(dev, "attach tuner input %d adr %02x\n", input->nr, tunerconf->addr); feconf->tuner_init = ctl->tuner_init; @@ -1022,13 +1033,14 @@ static int dvb_input_attach(struct ddb_input *input) struct ddb_port *port = input->port; struct dvb_adapter *adap = &input->adap; struct dvb_demux *dvbdemux = &input->demux; + struct device *dev = &input->port->dev->pdev->dev; int sony_osc24 = 0, sony_tspar = 0; ret = dvb_register_adapter(adap, "DDBridge", THIS_MODULE, &input->port->dev->pdev->dev, adapter_nr); if (ret < 0) { - printk(KERN_ERR "ddbridge: Could not register adapter.Check if you enabled enough adapters in dvb-core!\n"); + dev_err(dev, "Could not register adapter. Check if you enabled enough adapters in dvb-core!\n"); return ret; } input->attached = 1; @@ -1254,7 +1266,7 @@ static void input_tasklet(unsigned long data) if (input->port->class == DDB_PORT_TUNER) { if (4&ddbreadl(DMA_BUFFER_CONTROL(input->nr))) - printk(KERN_ERR "Overflow input %d\n", input->nr); + dev_err(&dev->pdev->dev, "Overflow input %d\n", input->nr); while (input->cbuf != ((input->stat >> 11) & 0x1f) || (4 & safe_ddbreadl(dev, DMA_BUFFER_CONTROL(input->nr)))) { dvb_dmx_swfilter_packets(&input->demux, @@ -1323,6 +1335,7 @@ static int ddb_ci_attach(struct ddb_port *port) static int ddb_port_attach(struct ddb_port *port) { + struct device *dev = &port->dev->pdev->dev; int ret = 0; switch (port->class) { @@ -1339,7 +1352,7 @@ static int ddb_port_attach(struct ddb_port *port) break; } if (ret < 0) - printk(KERN_ERR "port_attach on port %d failed\n", port->nr); + dev_err(dev, "port_attach on port %d failed\n", port->nr); return ret; } @@ -1390,6 +1403,7 @@ static void ddb_ports_detach(struct ddb *dev) static int init_xo2(struct ddb_port *port) { struct i2c_adapter *i2c = &port->i2c->adap; + struct device *dev = &port->dev->pdev->dev; u8 val, data[2]; int res; @@ -1398,7 +1412,7 @@ static int init_xo2(struct ddb_port *port) return res; if (data[0] != 0x01) { - pr_info("Port %d: invalid XO2\n", port->nr); + dev_info(dev, "Port %d: invalid XO2\n", port->nr); return -1; } @@ -1524,7 +1538,7 @@ static void ddb_port_probe(struct ddb_port *port) port->class = DDB_PORT_CI; ddbwritel(I2C_SPEED_400, port->i2c->regs + I2C_TIMING); } else if (port_has_xo2(port, &xo2_type, &xo2_id)) { - printk(KERN_INFO "Port %d (TAB %d): XO2 type: %d, id: %d\n", + dev_dbg(&dev->pdev->dev, "Port %d (TAB %d): XO2 type: %d, id: %d\n", port->nr, port->nr+1, xo2_type, xo2_id); ddbwritel(I2C_SPEED_400, port->i2c->regs + I2C_TIMING); @@ -1569,10 +1583,10 @@ static void ddb_port_probe(struct ddb_port *port) } break; case DDB_XO2_TYPE_CI: - printk(KERN_INFO "DuoFlex CI modules not supported\n"); + dev_info(&dev->pdev->dev, "DuoFlex CI modules not supported\n"); break; default: - printk(KERN_INFO "Unknown XO2 DuoFlex module\n"); + dev_info(&dev->pdev->dev, "Unknown XO2 DuoFlex module\n"); break; } } else if (port_has_cxd28xx(port, &cxd_id)) { @@ -1624,7 +1638,7 @@ static void ddb_port_probe(struct ddb_port *port) ddbwritel(I2C_SPEED_100, port->i2c->regs + I2C_TIMING); } - printk(KERN_INFO "Port %d (TAB %d): %s\n", + dev_info(&dev->pdev->dev, "Port %d (TAB %d): %s\n", port->nr, port->nr+1, modname); } @@ -2006,7 +2020,7 @@ static int ddb_probe(struct pci_dev *pdev, const struct pci_device_id *id) dev->pdev = pdev; pci_set_drvdata(pdev, dev); dev->info = (struct ddb_info *) id->driver_data; - printk(KERN_INFO "DDBridge driver detected: %s\n", dev->info->name); + dev_info(&pdev->dev, "Detected %s\n", dev->info->name); dev->regs = ioremap(pci_resource_start(dev->pdev, 0), pci_resource_len(dev->pdev, 0)); @@ -2014,13 +2028,13 @@ static int ddb_probe(struct pci_dev *pdev, const struct pci_device_id *id) stat = -ENOMEM; goto fail; } - printk(KERN_INFO "HW %08x FW %08x\n", ddbreadl(0), ddbreadl(4)); + dev_info(&pdev->dev, "HW %08x FW %08x\n", ddbreadl(0), ddbreadl(4)); #ifdef CONFIG_PCI_MSI if (pci_msi_enabled()) stat = pci_enable_msi(dev->pdev); if (stat) { - printk(KERN_INFO ": MSI not available.\n"); + dev_info(&pdev->dev, "MSI not available.\n"); } else { irq_flag = 0; dev->msi = 1; @@ -2053,7 +2067,7 @@ static int ddb_probe(struct pci_dev *pdev, const struct pci_device_id *id) goto fail1; ddb_ports_init(dev); if (ddb_buffers_alloc(dev) < 0) { - printk(KERN_INFO ": Could not allocate buffer memory\n"); + dev_err(&pdev->dev, "Could not allocate buffer memory\n"); goto fail2; } if (ddb_ports_attach(dev) < 0) @@ -2063,19 +2077,19 @@ static int ddb_probe(struct pci_dev *pdev, const struct pci_device_id *id) fail3: ddb_ports_detach(dev); - printk(KERN_ERR "fail3\n"); + dev_err(&pdev->dev, "fail3\n"); ddb_ports_release(dev); fail2: - printk(KERN_ERR "fail2\n"); + dev_err(&pdev->dev, "fail2\n"); ddb_buffers_free(dev); fail1: - printk(KERN_ERR "fail1\n"); + dev_err(&pdev->dev, "fail1\n"); if (dev->msi) pci_disable_msi(dev->pdev); if (stat == 0) free_irq(dev->pdev->irq, dev); fail: - printk(KERN_ERR "fail\n"); + dev_err(&pdev->dev, "fail\n"); ddb_unmap(dev); pci_set_drvdata(pdev, NULL); pci_disable_device(pdev); @@ -2255,7 +2269,7 @@ static __init int module_init_ddbridge(void) { int ret; - printk(KERN_INFO "Digital Devices PCIE bridge driver, Copyright (C) 2010-11 Digital Devices GmbH\n"); + pr_info("Digital Devices PCIE bridge driver, Copyright (C) 2010-11 Digital Devices GmbH\n"); ret = ddb_class_create(); if (ret < 0) -- cgit v1.2.3-58-ga151 From f9c1e254e1c3920cefe2aa4660091d7f5229615f Mon Sep 17 00:00:00 2001 From: Daniel Scheller Date: Wed, 21 Jun 2017 17:10:54 -0300 Subject: media: dvb-frontends/stv0367: deduplicate DDB dvb_frontend_ops caps Signed-off-by: Daniel Scheller Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/stv0367.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/drivers/media/dvb-frontends/stv0367.c b/drivers/media/dvb-frontends/stv0367.c index e726c2e00460..b42b99ad4d3f 100644 --- a/drivers/media/dvb-frontends/stv0367.c +++ b/drivers/media/dvb-frontends/stv0367.c @@ -3126,15 +3126,12 @@ static const struct dvb_frontend_ops stv0367ddb_ops = { 0x400 |/* FE_CAN_QAM_4 */ FE_CAN_QAM_16 | FE_CAN_QAM_32 | FE_CAN_QAM_64 | FE_CAN_QAM_128 | - FE_CAN_QAM_256 | FE_CAN_FEC_AUTO | + FE_CAN_QAM_256 | FE_CAN_QAM_AUTO | /* DVB-T */ - FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | - FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | - FE_CAN_FEC_AUTO | - FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | - FE_CAN_QAM_128 | FE_CAN_QAM_256 | FE_CAN_QAM_AUTO | - FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_RECOVER | - FE_CAN_INVERSION_AUTO | + FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | + FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | + FE_CAN_QPSK | FE_CAN_TRANSMISSION_MODE_AUTO | + FE_CAN_RECOVER | FE_CAN_INVERSION_AUTO | FE_CAN_MUTE_TS }, .release = stv0367_release, -- cgit v1.2.3-58-ga151 From 77f1f992f8069c870ac7e8867dcbfb3ea09209d7 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sat, 24 Jun 2017 13:02:01 -0300 Subject: media: dtv-core.rst: explain how to get DVBv5 statistics It is not trivial to implement the logic that collects DVBv5 statistics. As we're seein lately too many implementations that are not quite right when reviewing patchsets, add a detailed explanation, adding a few examples about the right thing to be done. Signed-off-by: Mauro Carvalho Chehab --- Documentation/media/kapi/dtv-core.rst | 279 ++++++++++++++++++++++++++++++++++ 1 file changed, 279 insertions(+) diff --git a/Documentation/media/kapi/dtv-core.rst b/Documentation/media/kapi/dtv-core.rst index ff86bf0abeae..bec7875a7e2e 100644 --- a/Documentation/media/kapi/dtv-core.rst +++ b/Documentation/media/kapi/dtv-core.rst @@ -74,6 +74,285 @@ part of their handler for :c:type:`device_driver`.\ ``resume()``. A few other optional functions are provided to handle some special cases. +Digital TV Frontend statistics +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Introduction +^^^^^^^^^^^^ + +Digital TV frontends provide a range of +:ref:`statistics ` meant to help tuning the device +and measuring the quality of service. + +For each statistics measurement, the driver should set the type of scale used, +or ``FE_SCALE_NOT_AVAILABLE`` if the statistics is not available on a given +time. Drivers should also provide the number of statistics for each type. +that's usually 1 for most video standards [#f1]_. + +Drivers should initialize each statistic counters with length and +scale at its init code. For example, if the frontend provides signal +strength, it should have, on its init code:: + + struct dtv_frontend_properties *c = &state->fe.dtv_property_cache; + + c->strength.len = 1; + c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + +And, when the statistics got updated, set the scale:: + + c->strength.stat[0].scale = FE_SCALE_DECIBEL; + c->strength.stat[0].uvalue = strength; + +.. [#f1] For ISDB-T, it may provide both a global statistics and a per-layer + set of statistics. On such cases, len should be equal to 4. The first + value corresponds to the global stat; the other ones to each layer, e. g.: + + - c->cnr.stat[0] for global S/N carrier ratio, + - c->cnr.stat[1] for Layer A S/N carrier ratio, + - c->cnr.stat[2] for layer B S/N carrier ratio, + - c->cnr.stat[3] for layer C S/N carrier ratio. + +.. note:: Please prefer to use ``FE_SCALE_DECIBEL`` instead of + ``FE_SCALE_RELATIVE`` for signal strength and CNR measurements. + +Groups of statistics +^^^^^^^^^^^^^^^^^^^^ + +There are several groups of statistics currently supported: + +Signal strength (:ref:`DTV-STAT-SIGNAL-STRENGTH`) + - Measures the signal strength level at the analog part of the tuner or + demod. + + - Typically obtained from the gain applied to the tuner and/or frontend + in order to detect the carrier. When no carrier is detected, the gain is + at the maximum value (so, strength is on its minimal). + + - As the gain is visible through the set of registers that adjust the gain, + typically, this statistics is always available [#f2]_. + + - Drivers should try to make it available all the times, as this statistics + can be used when adjusting an antenna position and to check for troubles + at the cabling. + + .. [#f2] On a few devices, the gain keeps floating if no carrier. + On such devices, strength report should check first if carrier is + detected at the tuner (``FE_HAS_CARRIER``, see :c:type:`fe_status`), + and otherwise return the lowest possible value. + +Carrier Signal to Noise ratio (:ref:`DTV-STAT-CNR`) + - Signal to Noise ratio for the main carrier. + + - Signal to Noise measurement depends on the device. On some hardware, is + available when the main carrier is detected. On those hardware, CNR + measurement usually comes from the tuner (e. g. after ``FE_HAS_CARRIER``, + see :c:type:`fe_status`). + + On other devices, it requires inner FEC decoding, + as the frontend measures it indirectly from other parameters (e. g. after + ``FE_HAS_VITERBI``, see :c:type:`fe_status`). + + Having it available after inner FEC is more common. + +Bit counts post-FEC (:ref:`DTV-STAT-POST-ERROR-BIT-COUNT` and :ref:`DTV-STAT-POST-TOTAL-BIT-COUNT`) + - Those counters measure the number of bits and bit errors errors after + the forward error correction (FEC) on the inner coding block + (after Viterbi, LDPC or other inner code). + + - Due to its nature, those statistics depend on full coding lock + (e. g. after ``FE_HAS_SYNC`` or after ``FE_HAS_LOCK``, + see :c:type:`fe_status`). + +Bit counts pre-FEC (:ref:`DTV-STAT-PRE-ERROR-BIT-COUNT` and :ref:`DTV-STAT-PRE-TOTAL-BIT-COUNT`) + - Those counters measure the number of bits and bit errors errors before + the forward error correction (FEC) on the inner coding block + (before Viterbi, LDPC or other inner code). + + - Not all frontends provide this kind of statistics. + + - Due to its nature, those statistics depend on inner coding lock (e. g. + after ``FE_HAS_VITERBI``, see :c:type:`fe_status`). + +Block counts (:ref:`DTV-STAT-ERROR-BLOCK-COUNT` and :ref:`DTV-STAT-TOTAL-BLOCK-COUNT`) + - Those counters measure the number of blocks and block errors errors after + the forward error correction (FEC) on the inner coding block + (before Viterbi, LDPC or other inner code). + + - Due to its nature, those statistics depend on full coding lock + (e. g. after ``FE_HAS_SYNC`` or after + ``FE_HAS_LOCK``, see :c:type:`fe_status`). + +.. note:: All counters should be monotonically increased as they're + collected from the hardware. + +A typical example of the logic that handle status and statistics is:: + + static int foo_get_status_and_stats(struct dvb_frontend *fe) + { + struct foo_state *state = fe->demodulator_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + + int rc; + enum fe_status *status; + + /* Both status and strength are always available */ + rc = foo_read_status(fe, &status); + if (rc < 0) + return rc; + + rc = foo_read_strength(fe); + if (rc < 0) + return rc; + + /* Check if CNR is available */ + if (!(fe->status & FE_HAS_CARRIER)) + return 0; + + rc = foo_read_cnr(fe); + if (rc < 0) + return rc; + + /* Check if pre-BER stats are available */ + if (!(fe->status & FE_HAS_VITERBI)) + return 0; + + rc = foo_get_pre_ber(fe); + if (rc < 0) + return rc; + + /* Check if post-BER stats are available */ + if (!(fe->status & FE_HAS_SYNC)) + return 0; + + rc = foo_get_post_ber(fe); + if (rc < 0) + return rc; + } + + static const struct dvb_frontend_ops ops = { + /* ... */ + .read_status = foo_get_status_and_stats, + }; + +Statistics collect +^^^^^^^^^^^^^^^^^^ + +On almost all frontend hardware, the bit and byte counts are stored by +the hardware after a certain amount of time or after the total bit/block +counter reaches a certain value (usually programable), for example, on +every 1000 ms or after receiving 1,000,000 bits. + +So, if you read the registers too soon, you'll end by reading the same +value as in the previous reading, causing the monotonic value to be +incremented too often. + +Drivers should take the responsibility to avoid too often reads. That +can be done using two approaches: + +if the driver have a bit that indicates when a collected data is ready +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +Driver should check such bit before making the statistics available. + +An example of such behavior can be found at this code snippet (adapted +from mb86a20s driver's logic):: + + static int foo_get_pre_ber(struct dvb_frontend *fe) + { + struct foo_state *state = fe->demodulator_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + int rc, bit_error; + + /* Check if the BER measures are already available */ + rc = foo_read_u8(state, 0x54); + if (rc < 0) + return rc; + + if (!rc) + return 0; + + /* Read Bit Error Count */ + bit_error = foo_read_u32(state, 0x55); + if (bit_error < 0) + return bit_error; + + /* Read Total Bit Count */ + rc = foo_read_u32(state, 0x51); + if (rc < 0) + return rc; + + c->pre_bit_error.stat[0].scale = FE_SCALE_COUNTER; + c->pre_bit_error.stat[0].uvalue += bit_error; + c->pre_bit_count.stat[0].scale = FE_SCALE_COUNTER; + c->pre_bit_count.stat[0].uvalue += rc; + + return 0; + } + +If the driver doesn't provide a statistics available check bit +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +A few devices, however, may not provide a way to check if the stats are +available (or the way to check it is unknown). They may not even provide +a way to directly read the total number of bits or blocks. + +On those devices, the driver need to ensure that it won't be reading from +the register too often and/or estimate the total number of bits/blocks. + +On such drivers, a typical routine to get statistics would be like +(adapted from dib8000 driver's logic):: + + struct foo_state { + /* ... */ + + unsigned long per_jiffies_stats; + } + + static int foo_get_pre_ber(struct dvb_frontend *fe) + { + struct foo_state *state = fe->demodulator_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + int rc, bit_error; + u64 bits; + + /* Check if time for stats was elapsed */ + if (!time_after(jiffies, state->per_jiffies_stats)) + return 0; + + /* Next stat should be collected in 1000 ms */ + state->per_jiffies_stats = jiffies + msecs_to_jiffies(1000); + + /* Read Bit Error Count */ + bit_error = foo_read_u32(state, 0x55); + if (bit_error < 0) + return bit_error; + + /* + * On this particular frontend, there's no register that + * would provide the number of bits per 1000ms sample. So, + * some function would calculate it based on DTV properties + */ + bits = get_number_of_bits_per_1000ms(fe); + + c->pre_bit_error.stat[0].scale = FE_SCALE_COUNTER; + c->pre_bit_error.stat[0].uvalue += bit_error; + c->pre_bit_count.stat[0].scale = FE_SCALE_COUNTER; + c->pre_bit_count.stat[0].uvalue += bits; + + return 0; + } + +Please notice that, on both cases, we're getting the statistics using the +:c:type:`dvb_frontend_ops` ``.read_status`` callback. The rationale is that +the frontend core will automatically call this function periodically +(usually, 3 times per second, when the frontend is locked). + +That warrants that we won't miss to collect a counter and increment the +monotonic stats at the right time. + +Digital TV Frontend functions and types +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + .. kernel-doc:: drivers/media/dvb-core/dvb_frontend.h -- cgit v1.2.3-58-ga151 From 59a4fcf3a6aede21b34b7ecf275c27d87dfcb7bc Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sat, 24 Jun 2017 13:15:49 -0300 Subject: media: imx.rst: add it to v4l-drivers book Avoid the following warning when building documentation: checking consistency... /devel/v4l/patchwork/Documentation/media/v4l-drivers/imx.rst:: WARNING: document isn't included in any toctree While here, avoid placing all driver authors at just one line at the html/pdf output. Acked-by: Steve Longerbeam Signed-off-by: Mauro Carvalho Chehab --- Documentation/media/v4l-drivers/imx.rst | 7 ++++--- Documentation/media/v4l-drivers/index.rst | 1 + 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/Documentation/media/v4l-drivers/imx.rst b/Documentation/media/v4l-drivers/imx.rst index e0ee0f1aeb05..3c4f58bda178 100644 --- a/Documentation/media/v4l-drivers/imx.rst +++ b/Documentation/media/v4l-drivers/imx.rst @@ -607,8 +607,9 @@ References Authors ------- -Steve Longerbeam -Philipp Zabel -Russell King + +- Steve Longerbeam +- Philipp Zabel +- Russell King Copyright (C) 2012-2017 Mentor Graphics Inc. diff --git a/Documentation/media/v4l-drivers/index.rst b/Documentation/media/v4l-drivers/index.rst index 2e24d6806052..10f2ce42ece2 100644 --- a/Documentation/media/v4l-drivers/index.rst +++ b/Documentation/media/v4l-drivers/index.rst @@ -41,6 +41,7 @@ For more details see the file COPYING in the source distribution of Linux. cx88 davinci-vpbe fimc + imx ivtv max2175 meye -- cgit v1.2.3-58-ga151 From dbe885a5dd86abc4bbcc72d17a6be4e92308c87f Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Thu, 22 Jun 2017 00:20:59 -0300 Subject: media: tuners: mxl5005s: remove useless variable assignments Values assigned to variables Fmax and Fmin at lines 2740 and 2741 are overwritten at lines 2754 and 2755 before they can be used. This makes such variable assignments useless. Addresses-Coverity-ID: 1226952 Addresses-Coverity-ID: 1226953 Signed-off-by: Gustavo A. R. Silva Signed-off-by: Mauro Carvalho Chehab --- drivers/media/tuners/mxl5005s.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/media/tuners/mxl5005s.c b/drivers/media/tuners/mxl5005s.c index 353744fee053..dd59c2c0e4a5 100644 --- a/drivers/media/tuners/mxl5005s.c +++ b/drivers/media/tuners/mxl5005s.c @@ -2737,8 +2737,6 @@ static u16 MXL_TuneRF(struct dvb_frontend *fe, u32 RF_Freq) status += MXL_ControlWrite(fe, TG_LO_DIVVAL, 0x0); status += MXL_ControlWrite(fe, TG_LO_SELVAL, 0x7); divider_val = 2 ; - Fmax = FmaxBin ; - Fmin = FminBin ; } /* TG_DIV_VAL */ -- cgit v1.2.3-58-ga151 From d18a6ef59c53022b4af222412dc494cfd21c298e Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 28 Apr 2017 09:52:07 -0300 Subject: media: dib0700: fix locking in dib0700_i2c_xfer_new() This patch mostly adds unlocks to error paths. But one additional small change is that I made the first "break;" a "goto unlock;" which means that now we return failure instead of success on that path. Signed-off-by: Dan Carpenter Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/dvb-usb/dib0700_core.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/drivers/media/usb/dvb-usb/dib0700_core.c b/drivers/media/usb/dvb-usb/dib0700_core.c index 08acdd32e412..4dea79718827 100644 --- a/drivers/media/usb/dvb-usb/dib0700_core.c +++ b/drivers/media/usb/dvb-usb/dib0700_core.c @@ -215,13 +215,14 @@ static int dib0700_i2c_xfer_new(struct i2c_adapter *adap, struct i2c_msg *msg, USB_CTRL_GET_TIMEOUT); if (result < 0) { deb_info("i2c read error (status = %d)\n", result); - break; + goto unlock; } if (msg[i].len > sizeof(st->buf)) { deb_info("buffer too small to fit %d bytes\n", msg[i].len); - return -EIO; + result = -EIO; + goto unlock; } memcpy(msg[i].buf, st->buf, msg[i].len); @@ -233,8 +234,8 @@ static int dib0700_i2c_xfer_new(struct i2c_adapter *adap, struct i2c_msg *msg, /* Write request */ if (mutex_lock_interruptible(&d->usb_mutex) < 0) { err("could not acquire lock"); - mutex_unlock(&d->i2c_mutex); - return -EINTR; + result = -EINTR; + goto unlock; } st->buf[0] = REQUEST_NEW_I2C_WRITE; st->buf[1] = msg[i].addr << 1; @@ -247,7 +248,9 @@ static int dib0700_i2c_xfer_new(struct i2c_adapter *adap, struct i2c_msg *msg, if (msg[i].len > sizeof(st->buf) - 4) { deb_info("i2c message to big: %d\n", msg[i].len); - return -EIO; + mutex_unlock(&d->usb_mutex); + result = -EIO; + goto unlock; } /* The Actual i2c payload */ @@ -269,8 +272,11 @@ static int dib0700_i2c_xfer_new(struct i2c_adapter *adap, struct i2c_msg *msg, } } } + result = i; + +unlock: mutex_unlock(&d->i2c_mutex); - return i; + return result; } /* -- cgit v1.2.3-58-ga151 From 66083b49bd337e5f4dfa168c145ca38f8bcbe522 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 28 Apr 2017 09:53:31 -0300 Subject: media: dib0700: fix error handling in dib0700_i2c_xfer_legacy() Mostly this adds some unlocks to error paths. But, if you see where there were "break;" statements before, I changed those paths to return error codes instead of returning success. Signed-off-by: Dan Carpenter Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/dvb-usb/dib0700_core.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) diff --git a/drivers/media/usb/dvb-usb/dib0700_core.c b/drivers/media/usb/dvb-usb/dib0700_core.c index 4dea79718827..bea1b4764a66 100644 --- a/drivers/media/usb/dvb-usb/dib0700_core.c +++ b/drivers/media/usb/dvb-usb/dib0700_core.c @@ -287,7 +287,7 @@ static int dib0700_i2c_xfer_legacy(struct i2c_adapter *adap, { struct dvb_usb_device *d = i2c_get_adapdata(adap); struct dib0700_state *st = d->priv; - int i,len; + int i, len, result; if (mutex_lock_interruptible(&d->i2c_mutex) < 0) return -EINTR; @@ -304,7 +304,8 @@ static int dib0700_i2c_xfer_legacy(struct i2c_adapter *adap, if (msg[i].len > sizeof(st->buf) - 2) { deb_info("i2c xfer to big: %d\n", msg[i].len); - return -EIO; + result = -EIO; + goto unlock; } memcpy(&st->buf[2], msg[i].buf, msg[i].len); @@ -319,13 +320,15 @@ static int dib0700_i2c_xfer_legacy(struct i2c_adapter *adap, if (len <= 0) { deb_info("I2C read failed on address 0x%02x\n", msg[i].addr); - break; + result = -EIO; + goto unlock; } if (msg[i + 1].len > sizeof(st->buf)) { deb_info("i2c xfer buffer to small for %d\n", msg[i].len); - return -EIO; + result = -EIO; + goto unlock; } memcpy(msg[i + 1].buf, st->buf, msg[i + 1].len); @@ -334,14 +337,17 @@ static int dib0700_i2c_xfer_legacy(struct i2c_adapter *adap, i++; } else { st->buf[0] = REQUEST_I2C_WRITE; - if (dib0700_ctrl_wr(d, st->buf, msg[i].len + 2) < 0) - break; + result = dib0700_ctrl_wr(d, st->buf, msg[i].len + 2); + if (result < 0) + goto unlock; } } + result = i; +unlock: mutex_unlock(&d->usb_mutex); mutex_unlock(&d->i2c_mutex); - return i; + return result; } static int dib0700_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msg, -- cgit v1.2.3-58-ga151 From b1e1d4532e073c4e6a47efd7e447fceb37528ad9 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 2 May 2017 23:12:22 -0300 Subject: media: em28xx: Ignore errors while reading from eeprom MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit While testing support for Terratec H6 rev. 2, it was noticed that reading from eeprom there causes a timeout error. Apparently, this is due to the need of properly setting GPIOs. In any case, the driver doesn't really require eeprom reading to succeed, as this is currently used only for debug. So, Ignore such errors. Signed-off-by: Mauro Carvalho Chehab Acked-by: Frank Schäfer Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/em28xx/em28xx-i2c.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/media/usb/em28xx/em28xx-i2c.c b/drivers/media/usb/em28xx/em28xx-i2c.c index 8c472d5adb50..60b195c157b8 100644 --- a/drivers/media/usb/em28xx/em28xx-i2c.c +++ b/drivers/media/usb/em28xx/em28xx-i2c.c @@ -982,8 +982,6 @@ int em28xx_i2c_register(struct em28xx *dev, unsigned bus, dev_err(&dev->intf->dev, "%s: em28xx_i2_eeprom failed! retval [%d]\n", __func__, retval); - - return retval; } } -- cgit v1.2.3-58-ga151 From d6a643275a3659946398cd42e5df805546f9e247 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 2 May 2017 23:12:23 -0300 Subject: media: em28xx: add support for new of Terratec H6 There's a new version of Terratec H6 with uses USB ID 0ccd:10b2. This version is similar to the old one (with is supported via the HTC entry), except that this one has the eeprom on the second bus. On this board, one side of this board is labeled with: dvbc v2.0 The other side with: 94V-0, MO2, RK-4221 with huge digits: 1107 With those patches, the board is properly detected: em28xx 1-1.5:1.0: New device TERRATEC TERRATCE H5 MKII @ 480 Mbps (0ccd:10b2, interface 0, class 0) em28xx 1-1.5:1.0: Audio interface 0 found (Vendor Class) em28xx 1-1.5:1.0: Video interface 0 found: isoc em28xx 1-1.5:1.0: DVB interface 0 found: isoc em28xx 1-1.5:1.0: chip ID is em2884 em28xx eeprom 00000000: 26 00 00 00 02 0b 0f e5 f5 64 01 60 09 e5 f5 64 &........d.`...d em28xx eeprom 00000010: 09 60 03 c2 c6 22 e5 f7 b4 03 13 e5 f6 b4 87 03 .`...".......... em28xx eeprom 00000020: 02 0a b9 e5 f6 b4 93 03 02 09 46 c2 c6 22 c2 c6 ..........F..".. em28xx eeprom 00000030: 22 00 60 00 ef 70 08 85 3d 82 85 3c 83 93 ff ef ".`..p..=..<.... em28xx eeprom 00000040: 60 19 85 3d 82 85 3c 83 e4 93 12 07 a3 12 0a fe `..=..<......... em28xx eeprom 00000050: 05 3d e5 3d 70 02 05 3c 1f 80 e4 22 12 0b 06 02 .=.=p..<...".... em28xx eeprom 00000060: 07 e2 01 00 1a eb 67 95 cd 0c b2 10 f0 13 6b 03 ......g.......k. em28xx eeprom 00000070: 98 22 6a 1c 86 12 27 57 4e 16 29 00 60 00 00 00 ."j...'WN.).`... em28xx eeprom 00000080: 02 00 00 00 5e 00 13 00 f0 10 44 82 82 00 00 00 ....^.....D..... em28xx eeprom 00000090: 5b 81 c0 00 00 00 20 40 20 80 02 20 10 01 00 00 [..... @ .. .... em28xx eeprom 000000a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ em28xx eeprom 000000b0: c6 40 00 00 81 00 00 00 00 00 00 00 00 c4 00 00 .@.............. em28xx eeprom 000000c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1c 03 ................ em28xx eeprom 000000d0: 31 00 32 00 33 00 34 00 35 00 36 00 37 00 38 00 1.2.3.4.5.6.7.8. em28xx eeprom 000000e0: 39 00 41 00 42 00 43 00 44 00 12 03 54 00 45 00 9.A.B.C.D...T.E. em28xx eeprom 000000f0: 52 00 52 00 41 00 54 00 45 00 43 00 22 03 54 00 R.R.A.T.E.C.".T. em28xx 1-1.5:1.0: eeprom 000100: ... (skipped) em28xx 1-1.5:1.0: EEPROM ID = 26 00 00 00, EEPROM hash = 0xbcd5a8cf em28xx 1-1.5:1.0: EEPROM info: em28xx 1-1.5:1.0: microcode start address = 0x0004, boot configuration = 0x00 em28xx 1-1.5:1.0: I2S audio, 5 sample rates em28xx 1-1.5:1.0: 500mA max power em28xx 1-1.5:1.0: Table at offset 0x27, strings=0x2298, 0x1c6a, 0x1286 em28xx 1-1.5:1.0: Identified as Terratec Cinergy H6 rev. 2 (card=101) em28xx 1-1.5:1.0: Currently, V4L2 is not supported on this model em28xx 1-1.5:1.0: dvb set to isoc mode. usbcore: registered new interface driver em28xx em28xx 1-1.5:1.0: Binding audio extension em28xx 1-1.5:1.0: em28xx-audio.c: Copyright (C) 2006 Markus Rechberger em28xx 1-1.5:1.0: em28xx-audio.c: Copyright (C) 2007-2016 Mauro Carvalho Chehab em28xx 1-1.5:1.0: Endpoint 0x83 high-speed on intf 0 alt 7 interval = 8, size 196 em28xx 1-1.5:1.0: Number of URBs: 1, with 64 packets and 192 size em28xx 1-1.5:1.0: Audio extension successfully initialized em28xx: Registered (Em28xx Audio Extension) extension em28xx 1-1.5:1.0: Binding DVB extension drxk: status = 0x639260d9 drxk: detected a drx-3926k, spin A3, xtal 20.250 MHz drxk: DRXK driver version 0.9.4300 drxk: frontend initialized. tda18271 4-0060: creating new instance tda18271: TDA18271HD/C2 detected @ 4-0060 dvbdev: DVB: registering new adapter (1-1.5:1.0) em28xx 1-1.5:1.0: DVB: registering adapter 0 frontend 0 (DRXK DVB-C DVB-T)... dvbdev: dvb_create_media_entity: media entity 'DRXK DVB-C DVB-T' registered. dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. em28xx 1-1.5:1.0: DVB extension successfully initialized em28xx: Registered (Em28xx dvb Extension) extension em28xx 1-1.5:1.0: Registering input extension rc rc0: 1-1.5:1.0 IR as /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.5/1-1.5:1.0/rc/rc0 Registered IR keymap rc-nec-terratec-cinergy-xs input: 1-1.5:1.0 IR as /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.5/1-1.5:1.0/rc/rc0/input0 em28xx 1-1.5:1.0: Input extension successfully initalized em28xx: Registered (Em28xx Input Extension) extension tda18271: performing RF tracking filter calibration tda18271: RF tracking filter calibration complete Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/em28xx/em28xx-cards.c | 18 ++++++++++++++++++ drivers/media/usb/em28xx/em28xx-dvb.c | 1 + drivers/media/usb/em28xx/em28xx.h | 1 + 3 files changed, 20 insertions(+) diff --git a/drivers/media/usb/em28xx/em28xx-cards.c b/drivers/media/usb/em28xx/em28xx-cards.c index 146341aeb782..4c57fd7929cb 100644 --- a/drivers/media/usb/em28xx/em28xx-cards.c +++ b/drivers/media/usb/em28xx/em28xx-cards.c @@ -1188,6 +1188,22 @@ struct em28xx_board em28xx_boards[] = { .tuner_gpio = terratec_h5_gpio, #else .tuner_type = TUNER_ABSENT, +#endif + .def_i2c_bus = 1, + .i2c_speed = EM28XX_I2C_CLK_WAIT_ENABLE | + EM28XX_I2C_FREQ_400_KHZ, + }, + [EM2884_BOARD_TERRATEC_H6] = { + .name = "Terratec Cinergy H6 rev. 2", + .has_dvb = 1, + .ir_codes = RC_MAP_NEC_TERRATEC_CINERGY_XS, +#if 0 + .tuner_type = TUNER_PHILIPS_TDA8290, + .tuner_addr = 0x41, + .dvb_gpio = terratec_h5_digital, /* FIXME: probably wrong */ + .tuner_gpio = terratec_h5_gpio, +#else + .tuner_type = TUNER_ABSENT, #endif .def_i2c_bus = 1, .i2c_speed = EM28XX_I2C_CLK_WAIT_ENABLE | @@ -2496,6 +2512,8 @@ struct usb_device_id em28xx_id_table[] = { .driver_info = EM2884_BOARD_TERRATEC_H5 }, { USB_DEVICE(0x0ccd, 0x10b6), /* H5 Rev. 3 */ .driver_info = EM2884_BOARD_TERRATEC_H5 }, + { USB_DEVICE(0x0ccd, 0x10b2), /* H6 */ + .driver_info = EM2884_BOARD_TERRATEC_H6 }, { USB_DEVICE(0x0ccd, 0x0084), .driver_info = EM2860_BOARD_TERRATEC_AV350 }, { USB_DEVICE(0x0ccd, 0x0096), diff --git a/drivers/media/usb/em28xx/em28xx-dvb.c b/drivers/media/usb/em28xx/em28xx-dvb.c index 82edd37f0d73..4a7db623fe29 100644 --- a/drivers/media/usb/em28xx/em28xx-dvb.c +++ b/drivers/media/usb/em28xx/em28xx-dvb.c @@ -1522,6 +1522,7 @@ static int em28xx_dvb_init(struct em28xx *dev) break; case EM2884_BOARD_ELGATO_EYETV_HYBRID_2008: case EM2884_BOARD_CINERGY_HTC_STICK: + case EM2884_BOARD_TERRATEC_H6: terratec_htc_stick_init(dev); /* attach demodulator */ diff --git a/drivers/media/usb/em28xx/em28xx.h b/drivers/media/usb/em28xx/em28xx.h index e8d97d5ec161..88084f24f033 100644 --- a/drivers/media/usb/em28xx/em28xx.h +++ b/drivers/media/usb/em28xx/em28xx.h @@ -148,6 +148,7 @@ #define EM28178_BOARD_PLEX_PX_BCUD 98 #define EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_DVB 99 #define EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_01595 100 +#define EM2884_BOARD_TERRATEC_H6 101 /* Limits minimum and default number of buffers */ #define EM28XX_MIN_BUF 4 -- cgit v1.2.3-58-ga151 From 1250a85b1b5c6b40c2ae32cd61a7029094530d31 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sat, 24 Jun 2017 15:46:24 -0300 Subject: media: Replace initalized ->initialized While committing a change on em28xx, I got a warning of a typo there. So, fix it on em28xx and on two other media drivers with the same typo. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/drx39xyj/drx_driver.h | 2 +- drivers/media/usb/au0828/au0828-input.c | 2 +- drivers/media/usb/em28xx/em28xx-input.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/media/dvb-frontends/drx39xyj/drx_driver.h b/drivers/media/dvb-frontends/drx39xyj/drx_driver.h index 4442e478db72..0bba34d493dc 100644 --- a/drivers/media/dvb-frontends/drx39xyj/drx_driver.h +++ b/drivers/media/dvb-frontends/drx39xyj/drx_driver.h @@ -307,7 +307,7 @@ int drxbsp_tuner_default_i2c_write_read(struct tuner_instance *tuner, * \def DRX_UNKNOWN * \brief Generic UNKNOWN value for DRX enumerated types. * -* Used to indicate that the parameter value is unknown or not yet initalized. +* Used to indicate that the parameter value is unknown or not yet initialized. */ #ifndef DRX_UNKNOWN #define DRX_UNKNOWN (254) diff --git a/drivers/media/usb/au0828/au0828-input.c b/drivers/media/usb/au0828/au0828-input.c index 9ec919c68482..9d82ec0a4b64 100644 --- a/drivers/media/usb/au0828/au0828-input.c +++ b/drivers/media/usb/au0828/au0828-input.c @@ -351,7 +351,7 @@ int au0828_rc_register(struct au0828_dev *dev) if (err) goto error; - pr_info("Remote controller %s initalized\n", ir->name); + pr_info("Remote controller %s initialized\n", ir->name); return 0; diff --git a/drivers/media/usb/em28xx/em28xx-input.c b/drivers/media/usb/em28xx/em28xx-input.c index eba75736e654..ca9673917ad5 100644 --- a/drivers/media/usb/em28xx/em28xx-input.c +++ b/drivers/media/usb/em28xx/em28xx-input.c @@ -821,7 +821,7 @@ static int em28xx_ir_init(struct em28xx *dev) if (err) goto error; - dev_info(&dev->intf->dev, "Input extension successfully initalized\n"); + dev_info(&dev->intf->dev, "Input extension successfully initialized\n"); return 0; -- cgit v1.2.3-58-ga151 From 6a1560ecaa8c6c775b16c928fc56fe8089a7f82e Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Wed, 3 May 2017 08:08:51 -0300 Subject: media: v4l: omap_vout: vrfb: Convert to dmaengine The dmaengine driver for sDMA now have support for interleaved transfer. This trasnfer type was open coded with the legacy omap-dma API, but now we can move it to dmaengine. Signed-off-by: Peter Ujfalusi Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/omap/omap_vout_vrfb.c | 133 ++++++++++++++++----------- drivers/media/platform/omap/omap_voutdef.h | 6 +- 2 files changed, 83 insertions(+), 56 deletions(-) diff --git a/drivers/media/platform/omap/omap_vout_vrfb.c b/drivers/media/platform/omap/omap_vout_vrfb.c index 92c4e1826356..45a553d4f5b2 100644 --- a/drivers/media/platform/omap/omap_vout_vrfb.c +++ b/drivers/media/platform/omap/omap_vout_vrfb.c @@ -16,7 +16,6 @@ #include #include -#include #include